championship series of the National Basketball Association, annual from 1950; officially includes 1947 to 1949 BAA Finals; officially called the National Basketball Association World Championship Series through 1987
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The NBA Finals is the annual championship series of the National Basketball Association (NBA). The Eastern and Western Conference champions play a best-of-seven series to determine the league champion. The team that wins the series is awarded the Larry O'Brien Championship Trophy, which replaced the original Walter A. Brown Trophy in 1976–77 following the ABA–NBA merger, though under the name "World Championship Trophy" before being renamed in 1983-84.
The series was initially known as the BAA Finals prior to the 1949–50 season when the Basketball Association of America (BAA) merged with the National Basketball League (NBL) to form the NBA. The competition oversaw further name changes to NBA World Championship Series from 1950 to 1985, as well as a brief stint as the Showdown, before settling on NBA Finals in 1986.
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